baber/WOPTO huggingface dataset:
Patent GB-297914-A (GB)
Title: Improvements in and relating to centrifugal separators
IPC: B04B1/20
Filed: 1927-07-26
Abstract: 297,914. Sunderland Forge & Engineering Co., Ltd., and Blair, G. July 26, 1927. Density separators; discharging. -A rotary conical bowl 16 with a horizontal axis has an internal spiral 39 for the conveyance of solids from the entrance at the large end of the drum to the discharge at the small end; the separated liquid is discharged at the large end. A short cylindrical part 17 is added to the wide end of the bowl 16 and has an inturned flange 18 with an inner cylinder 24 supported by ribs 26 radiating from a sleeve 27 loose on the shaft. At the other end of the separator the sleeve 45 has a flange 44 carrying vanes 53 and inclined blades 54 which operate inside the closed fixed casing 51. The sleeves 45, 27 with the combined structure of the bowl 16 and flange 44 are driven from the pulley 15 through gearing 50, 49, 47, 46 while the spiral 39 and the distributing spiral 28 are secured to the shaft 10 and driven directly from the pulley. The material is fed in through the hopper 1 and the distributor 24; the separated solids are fed forward by the spiral 39 and pass into the casing 51 from which they are freed by the blades 54 and discharged through the opening 55. The vanes 53 help to seal the gaps between the moving and the fixed parts. The separated liquid is discharged through openings 34 in the flange 18; it passes into the fixed casing 19 from which it travels through the pipe 20. A sliding plate 35 can be moved over each opening 34 and secured by a serrated washer and bolt; this alters the radial position of the edge of the opening and so varies the level of liquid in the bowl. The cylindrical portion 17 of the bowl is provided with centrifugally operated valves 56 which only close when the machine runs above a certain speed. This prevents the discharge chamber for solids from being flooded with liquid when the machine slows down before stopping; the valves 56 open at low speed and the liquid discharges into the casing 19. In a modified construction the cylindrical part 17 is replaced by a conical part and the remainder of the apparatus is modified accordingly.
Patent GB-766911-A (GB)
Title: Ball or like lifting devices for attachment to tractors
IPC: B60P1/02
Filed: 1954-07-07
Abstract: 766,911. Load-handling attachments for tractors; grubbing-machines. NORBURY, E. June 17, 1955 [July 7, 1954], No. 19855/54. Classes 78 (3) and 78 (4). A device for picking up bales or stooks in front of a tractor and depositing them into a trailer towed therebehind, comprises a boom 13, 14 which is luffed about a pivot 40 on a post 11 by the tractor power lift mechanism and a linkage 53, 54, 55. A grab (Fig. 6) mounted on the boom comprises a pair of jaws 67 pivoted at 66 to a cross-bar 65 secured to a tube 63 forming the end of the boom. These jaws are coupled by links 68 to a sleeve 48 slidable along tube 63 by a rod 47 which is pulled automatically at a predetermined point in each lifting movement of the boom and so causes the jaws to open and discharge their load. The mechanism for pulling rod 47 comprises a fixed abutment 35 (Fig. 2) which is adjustable on post 11 by a ratchet-and-pawl mechanism 30, 32 and which, when the boom is at the predetermined height contacts a lever 46 and moves it about its pivotal mounting 45a on the boom. The rod 47 is connected to the free end of lever 46. The sleeve 48 is retained in its rearward, jaws open, position by a detent 76 on a spring-loaded " T " shaped lever 74 which is pivoted to the bar 65 at 73 and carries, at its lower end, a bar 75 which, when moved into contact with the. material to be lifted, releases detent 76 and allows the jaws to close under the action of springs 69. The jaws are provided with wheels 72 of flexible material. Return movement of the boom is assisted by a spring 60 which is stressed when the boom moves over-centre. In a modification (not shown), the grab is replaced by a fork.
Patent GB-1114019-A (GB)
Title: Process for the manufacture of polyolefins having a broad molecular weight distribution
IPC: C08F/
Filed: 1967-05-01
Abstract: A catalyst polymerization system comprises (a) 1 part by weight of the solid reaction product of TiCl4 with an alkylaluminium compound containing chlorine, (b) 0.1 to 1 part by weight of the solid reaction product of TiCl4 with aluminium, and (c) diethylaluminium monochloride. The catalyst is used for making olefine polymers having a broad molecular weight distribution by polymerizing in an inert diluent, ethylene, or copolymerizing ethylene with up to 5% by weight of butene-1, or propylene, in the presence of hydrogen, by low-presssure techniques. The polymers besides having a broad molecular weight distribution, have a U-value within the range of from 10 to 18 at a reduced specific viscosity of 2.7, determined in a 0.1% by weight solution in xylene at 110 DEG  C.
Patent GB-1468709-A (GB)
Title: Structural panel units
IPC: E04C2/06
Filed: 1974-05-07
Abstract: 1468709 Expanded metal panel, partitions R A PACENTI 7 May 1974 [7 May 1973] 19984/74 Headings E1B E1K and EIW A panel unit 10 formed from sheet metal comprises solid channel section side bars 11 interconnected by an integral web 18 of expanded metal, a further channel section bar 20 being provided at the centre of the unit. The portions 23 and 12a of the channel section bars may also be expanded metal. In an alternative embodiment the intermediate bar is Z-section and the expanded metal portions are inclined to the general plane of the unit. The unit may be used (Fig. 5) as a reinforcement for a lightweight concrete slab 41 which may have a facing 42 on one or both faces. The unit may also receive facing sheets on either face and be embedded in foamed polyurethane cast therebetween. Alternatively the units may be used to support a partition (Fig. 3) in which case the lower edge is secured to the floor by a channel section member, the upper edge to a ceiling by an angle section member, and insulation 34 and facing sheets 32 applied thereto. One or both faces of the insulation may receive a vapour barrier 35. The panel is preferably formed from a single sheet of metal.
Patent GB-596832-A (GB)
Title: Improvements in or relating to electronic means for controlling load circuits for welding and other apparatus
IPC: B23K11/24
Filed: 1945-08-03
Abstract: 596,832. Supply systems for resistance welding &c. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. Aug. 3, 1945, No. 19993. Convention date, Aug. 15, 1944. [Class 38 (iv)] Thermionic control; condenser arrangements.- To supply a single impulse of current from an A.C. source to a load, such as the ignition electrode of an ignitron 11 controlling the current supply to welding electrodes, a condenser 61 is charged by successive discharges through an auxiliary arc valve 41, and a relay ! 50 is then operated to'permit the condenser 61 to discharge through the load and the valve 41, preferably at a predetermined instant in a subsequent half-wave of supply potential. The valve 41 is controlled by a circuit comprising resistances 65, 75 and 77 which is connected at a point between resistances 65, 75 and through a condenser 67 to the control electrode 69, whereby an alternating potential in phase with anode potential is applied to the electrode 69 and condenser 67 is progressively charged to a maximum negative potential. Condenser 61 also builds up its charge during these impulses. When relay 50 is operated to transfer condenser and valve to the circuit of the load or igniter 103 the condenser 67 slowly discharges through a resistance 68. A transformer 73 supplied through a phase-shifting circuit 87 injects peaked impulses into the control circuit whereby the control electrode, at a desired instant in a later half-cycle, becomes sufficiently positive to render valve 41 again conductive, whereupon the desired single intake passes through the load or igniter 103 from the condenser 61.
Patent GB-1037917-A (GB)
Title: Improvements relating to roof supports for mine workings
IPC: E21D23/00
Filed: 1963-01-29
Abstract: 1,037,917. Advancing mine-roof supports. K. M. GROETSCHEL. Jan. 29, 1963 [Jan. 29, 1962; Nov. 10, 1962], No. 20048/64. Divided out of 1,037,911. Heading E1E. The subject matter of the present Specification is the same as that of the parent Specification but the claims differ.
Patent GB-432863-A (GB)
Title: Improvements in machinery for the manufacture of filter tips for cigarettes
IPC: A24D3/02
Filed: 1934-01-27
Abstract: In a mechanism for making filter tips for cigarettes, a strip of paper or the like is fed to a coiling device comprising two pairs of fingers adapted to engage opposite edges of the strip, and the coiled strip is cut so as to separate and deliver for use the middle portion, the axial length of which may be sufficient for a number of filter tips, while rejecting the end portions associated with the pairs of fingers.  Paste is applied by a paste roll to the strip before it is coiled.  The mechanism described is identical with that described in Specification 432,796. Specification 392,266 also is referred to in the Provisional Specification.
Patent GB-593514-A (GB)
Title: Improvements in or relating to lens systems for wide-aperture anastigmatic objectives
IPC: G02B13/18
Filed: 1944-10-17
Abstract: 593,514. Lens systems. JEFFREE, J. H. Oct. 17, 1944, No. 20097. [Class 97 (i)] A lens system for a wide aperture anastigmatic objective consists of, in order of arrangement, a positive doublet of unsymmetrical form with the convex surface or the more convex surface to the front, one or two positive components and a rear divergent component located near the rear conjugate focus and giving the desired anastigmatic correction, the doublet being corrected or over-corrected in order to offset the chromatic aberration of the uncorrected central lens or lenses. The doublet may consist of a front bi-convex lens of methyl methacrylate polymer, the front surface of which may be aspherical, and a bi-concave lens moulded from polystyrene. In the form shown, a bi-convex lens 13 having an aspherical front surface is cemented to a bi-concave lens 14, separated by an air space from single convergent lenses 15, 16 moulded from polymethyl methacrylate, these lenses, in turn, being so separated from a plano-concave lens 17, moulded from polystyrene. The convex surface 12 of a cathode-ray tube located at the rear conjugate focus, is imaged anastigmatically on a screen at the front conjugate focus. Temperature variations may be reduced as described in Specification 561,503, e.g. by making part of the front component of the system of glass. Optical data are given.
Patent GB-428510-A (GB)
Title: Primer valve for drain traps and the like
IPC: F16K29/00
Filed: 1934-07-09
Abstract: 428,510. Drain traps. GOSS, P. S., 621, Southwest Morrison Street, Portland, Oregon, U.S.A. July 9, 1934, No. 20116. [Class 33] [See also Group XXIX] To prevent evaporation from breaking the seal of the trap of a floor drain or other infrequently used fixture, small quantities of water are fed to it by a valve actuated whenever a more frequently used fixture is actuated. A closed tube 1 having a water inlet I and an outlet O leading to a faucet or other fitting has a metering outlet 12 at its lower end leading to the trap. A plunger P, having three pistons P<1>, P<2>, P<3>, works in the tube 1 and has a valve packing V normally seated on a ring 10 surrounding the opening 12, the piston P<3> being a loose fit in the bore. As long as there is no flow through the outlet O a light spring S and the differential pressure on the pistons holds the valve V on its seating but whenever the faucet is opened the plunger P rises and opens the valve V to allow water to flow to the outlet 12. A stem 8 on the plunger, working through the outlet 12 with sufficient clearance, keeps the outlet free from dirt and in its uppermost position it projects a sufficient distance below the outlet to prevent splashing through air gaps 13.
Patent GB-1426330-A (GB)
Title: Indicating devices
IPC: C09K11/04
Filed: 1972-05-01
Abstract: 1426330 Uses of luminescence SAUNDERSROE DEVELOPMENTS Ltd 13 April 1973 [1 May 1972] 20143/72 Heading C4S [Also in Division F4] A portable indicating device comprises a body section housing at least one .self-luminous light source 6 of the type comprising a phosphor coated envelope containing a gaseous radionucleide, a reflector 4 associated with the or each source, transparent screen 5 and movable shutter 7 to control the light distribution. Split shutter 7 may be of equal sized parts or in a 2 : 1 ratio for example, to provide a required zone of visibility. Sections may be formed separately of metal, plastics or bonded glass fibre or several parts may be integrally formed, e.g. by injection moulding. Reflector 4 is preferably silvered or aluminized plastic or of reflecting material. Base 2 may have a keyhole slot, or spring or crocodile clips may be attached to base 2 or body 1. Fig. 2 (not shown) includes slidable and rotatable shroud (14) and hinged shutter (18). An annular self-luminous light source between screen (13) and reflector (12) increases the visibility range. The shutters may be remotely or locally power controlled. A lens unit, e.g. a fresnel lens may be between source and screen. A light source may be in a lens, the reflector and source may be integral, filters and removable masks with cut-out arrows, or crosses may be used. Different phosphors may be used for different coloured sources. Applications are disclosed.
Patent GB-790192-A (GB)
Title: Improvements in or relating to wave guide components
Inventor: BIRTWISTLE WILLIAM
IPC: H01P1/04
Filed: 1953-07-21
Abstract: 790,192. Waveguides. MIDDLESEX GUN CO., Ltd. Oct. 20, 1954 [July 21, 1953], No. 20175/53. Class 40 (8). A flange 3 is secured to a waveguide 1 by a layer of adhesive 7, a metallic layer 11, e.g. of copper, being deposited on the ends of the flange and the guide to ensure electrical contact between the two. The guide 1 may consist of metal deposited upon a removable former in the manner described in Specification 790,191 according to which a strengthening layer of laminated plastic is provided around the deposited metal 1 and the bosses 5 of the flanges.
Patent GB-712571-A (GB)
Title: Improvements in butt splicing apparatus
IPC: B29B15/04
Filed: 1952-08-11
Abstract: 712,571. Butt-splicing apparatus. WINGFOOT CORPORATION. Aug. 11, 1952 [Feb. 18, 1952], No. 20183/52. Class 70 [Also in Group VIII] Apparatus for butt-splicing rubber comprises a pair of clamps 10 (Fig. 1) for holding the material to be joined, slide members 2 co-operating with the clamps to move them toward and away from each other, cutters 18 (see also Fig. 3, not shown) for trimming each end of the material to be joined and a co-operating cutting surface 17 for each cutter, means associated with each cutting surface for removing the trimmings from the cutter; and means to actuate such removing means substantially simultaneously with the slide members and bring the removing means into and out of contact with the cutter. In a preferred embodiment, an anvil 16 is positioned between clamps 10 and is fitted with knife actuating means 20 on which the knives 18 are mounted, and are then energized to cut into strips from the end of tube stock 8. Pneumatic cylinder 41 is caused to operate to move clamping means 7 with the tube stock 8 firmly held in place on guides 9, horizontally away from the anvil. The knives 18 are. cleaned by the motion of cleaning device 69 (not shown) which is controlled by scraper bar 70 (not shown) which is operated through a spring loaded mechanism, which together with the slide members 2 are together controlled by piston 40. Specification 712,570 is referred to.
Patent GB-1518489-A (GB)
Title: Negative electrodes for electric cells
IPC: H01M4/38
Filed: 1977-05-13
Abstract: 1518489 Electrodes for alkaline secondary cells SAFT SOC DES ACCUMULATEURS FIXES ET DE TRACTION SA 13 May 1977 [24 June 1976] 20185/77 Heading H1B A Ni-La electrode for an alkaline secondary cell includes a mercury compound; e.g. HgO, and preferably a PTFE binder.
Patent GB-143764-A (GB)
Title: Improvements in pencil-holders
IPC: B43K21/14
Filed: 1919-08-16
Abstract: 143,764. Valeggia, A. Aug. 16, 1919. Pencil-holders.-In a magazine pencil-holder of the screw-propelled type, the tubular conductor is surrounded by a number of inwardly-opening magazine recesses separated by substantially radial partitions, and is provided with means whereby, while it is occupied by a lead, it is retained with its lateral opening opposite the recess from which the lead was obtained, and can only be turned to another recess after the lead is completely extracted. The casing is made in two cylindrical main portions 11, 12 united by a screw joint 13. The conductor 16, which extends throughout the magazine section 12, is semicylindrical except its ends, the rear end being fixed in a cam-disk 19 capable of turning in the chamber in the rear of the diaphragm 20 closing the magazine recesses. The inner wall of the section 12 is formed with a series of magazine recesses 21, each adapted to contain a single lead and to which access is afforded by means of the screwed point section 14. A screw-propelled plunger 24 slides in the conductor, forming with it a solid cylinder, and a stud on the rear end of the plunger passes through a helical slot 30 in a barrel 26 into one of a series of straight guide-grooves 32, corresponding in number, angular position, and effective length to the magazine recesses and formed in the inner surface of the section 11. The barrel 26 is rotated by means of a cap 29 to which it is attached by a pin 27. When the plunger is screwed forward to its farthest extent, the stud 31 leaves the guide-groove 32 along which it has been advanced, and enters the circumferential groove 35, in which is rotatably housed a controlling-ring 34, with which the stud 31 engages, so that continued rotation of the cap 29 causes rotation of the plunger 24, conductor 16, and controlling-ring 34, Fig. 3. This brings the open side of the conductor opposite the next magazine recess 21, and the stud 31 under the next guide-groove 32, the amount of rotation being indicated and controlled by the ring 34, made of split spring metal to cause it to expand and engage by means of its split ends in a series of ratchet recesses 36. Additional means for controlling the rotation are provided by a stamped-up tongue 39 in a sheet-metal ring 40 surrounding the cam-disk 19, in which are formed a series of depressions. The screw barrel 26 is then rotated in the opposite direction, the ring 34 being prevented from turning by its engagement with the recesses 36, the plunger completely retracted, and a fresh lead shaken from the magazine into the conductor.
Patent GB-867244-A (GB)
Title: Improvements in or relating to constructional toy elements
IPC: A63H33/08
Filed: 1958-06-24
Abstract: 867,244. Constructional toys, VIKEN, R. June 24, 1958 [June 27, 1957], No. 20270/58. Class 132(3). A constructional toy element 2 comprises aligned male and female parts on opposite faces the male part 1 being positioned on a boss 3 having a hollow interior 4 and forming the female part. As shown, the element 2 is reinforced by ribs 8 which terminate at a distance from the element's ends to allow the ends to be bent up or down. Alternatively, the elements may be thicker so that ribs are not required. Either or both of the interfitting male and female parts may be tapered to allow a more positive interlock. 'The elements may be made from flexible synthetic plastic material. Wheels may be attached to the elements by means of bearings having a similar fastener system.
Patent GB-710236-A (GB)
Title: A device for heating finely granulated material
IPC: F27B7/20
Filed: 1952-08-13
Abstract: 710,236. Preheating furnace charges. KLOCKNER-HUMBOLDT-DEUTZ AKT.-GES. Aug. 13, 1952 [Oct. 20, 1951], No. 20336/52. Class 51 (2) Fine granular material, such as raw cement being fed to a rotary burning kiln 5, is heated by the waste gases from the kiln drawn by a fan 7 in succession through pipes 9, 10, 11, 12 and cyclone separators 1, 2, 3, 4. Further, the material supply 14 discharges into the last pipe 12 and the discharge from cyclones 4, 3 and 2 opens into the waste gas pipe of the preceding cyclone. Each material discharge pipe is constructed as shown in Fig. 5 for the pipe 14. The pipe is cut obliquely and a pivoted adjustable weight-controlled flap 15 with overlapping sides bears against the cut portion so that during flow the material piles up to form a gas seal within a surrounding casing 17. This casing extends downwardly by tube 20 to a distributing baffle disc 21, Fig. 1. An auxiliary cyclone separator 8 delivers to box 35 fed by screw conveyer 32 over a lip 38 to a pipe 27 feeding the kiln.
Patent GB-1279061-A (GB)
Title: Apparatus for storing and treating screenings material
IPC: B03B9/06
Filed: 1971-04-19
Abstract: 1279061 Feeding mills MASCHINENFABRIK BESTA 19 April 1971 [30 Jan 1970 22 Dec 1970] 20572/71 Heading B2A [Also in Division B8] In the storage and treatment of screenings from sewage, material R is thrown into a tank 10 and transported by a conveyor 11 towards a discharging and comminuting device 13. At a discharge aperture 14 the height of the bed of material is controlled by a spring operated regulator 16. Further control of the bed height is provided by a scraper device 19 having a pivotable rake 26 which is reciprocable along the length of the device 19 by a chain 31. The rake is mounted so that in travelling in the direction 36, it remains upright and urges the material away from the comminuting device 13. When the rake travels in the direction 37, it lies flat and slides over the material. Teeth 29 of the rake are vertically adjustable and the height of the end 21 of the scraper device 13 may also be adjusted. The device 13 serves to regulate the feed of material toward the discharge aperture 14. In a modification, Fig. 3 (not shown), the scraper frame by means of hydraulic cylinders (43), may be set at inclinations up to approximately 70‹ to the horizontal. In place of the reciprocating scraper, a circulating chain type of scraper may be used.
Patent GB-1393793-A (GB)
Title: Methods for amplitude-quantising an analogue voltage produced by electr-optical scanning of picture originals
IPC: H03K6/00
Filed: 1972-05-03
Abstract: 1393793 Facsimile apparatus DR ING RUDOLF HELL GmbH 3 May 1972 [5 May 1971] 20658/72 Heading H4F In a facsimile system of the type described in Specification 1,269,093 in which the density gradations in a half tone reproduction are improved by adding an alternating voltage (e.g. triangular or sawtooth) to the analogue video voltage before it is quantized, to ensure that the frequency of the alternating voltage is anharmonically related to the frequency of the quantizing steps, even when this quantizing frequency is varied to alter the scale of reproduction, the frequency of the alternating voltage is continuously varied preferably in a statistically irregular manner. In the embodiment described a random pulse generator is arranged to intermittently switch a resistor in parallel with the capacitor of the RC time constant circuit of a self oscillating triangular alternating voltage generator so that a composite alternating voltage with irregularly changing rise and fall slopes is generated that is added to the analogue video is an operational amplifier before being quantized. The steepness of the rise and fall slopes may each change along their length between the values corresponding to the two frequencies randomly generated by the generator, or the steepness changes in the slopes corresponding to the two frequencies may be delayed to the end of each slope by employing a memory switch.